Lock-nut.



PATENT ED FEB. 28, 1905.

C. W. GIBBS.

LOOK NUT.

M/z'lhesSes. Inventor V WWW $6M K1n;M..

NllTlEU tltratlcs Patented February 538, 1905.

OllAltlfilflS \V. GIBBS, Ult BHIDGEPORT, UONNIIC TICUT.

LOQM NUT" SPECIFICATION forming part of Letters Patent No. 783,630,dated February 28, 1905.

Application filed August 22,1904. Serial No. 221,747.

Be it known that I, Cn'iimncsW. Glens, a citizen of the United States,residing at Bridge port, in the county of liairlield and State of(,kmnccticut, have invented a certain new and useful Improvement inLocloNuts, of which the'lollowing lS2LS1)9UliiCiti1i0ll,2tl1(l theaccompanying drawings show the construction of the new and ii'nprovedlock-nut and the proper way to use it.

1 am aware that there are many patent lock-nuts; but my object in theinvention has been to so construct a nut that it shall be of greater useto the public, and my experience as a manufacturer of nuts has shownthat such a nut must have the following features, all oi which areincorporated in my new invention called the Paragon lock-nut: First, thenut has a double grip, thus making certain that the nut will not shakeloose; second, it has a draw-bolt strain equal to a common nut; third,it can he used either end against the work, thus being a safeguardagainst accident should a nut be placed on a bolt wrongyand it can alsobe locked on a belt or red at any place desired without either end 01''the nut being agailist any object; fourth, it is as strong as a commonnut, having the same appearance when locked, and is made standard indimensions; lit'th, its locking device is run der full control of theoperator, who canv lock or unlock the nut in an instant just when andwhere he pleases without the use oil. any tools other than the wrench incommon use on nuts; sixth, having designed tools and method whereby thenew nut can be easily made it thus becomes possible to bring it intogeneral use, thus being of great value to the public. in order toconstruct such a nut, l have found it necessary to make it in two partsor sections.

' Figure 1 shows in side elevation the two parts or members of theimproved lock-nut mounted on a bolt and separated from each other. Fig.2 represents a similar view, par tially in section, of the .nut with itstwo members in the locked position. lFig. 3 is a perspcctivc viewshowing the arrangement 01? the slots and depth of the same, theirnumber,

depth are of great value in the invention as :1.

locking device.

In Fig. 1, A represents a common three-byfive-eighths bolt. B representsthat member of the nut known as the base or part designed to be placedagainst the work. This base is made with either a square or hexagon'shaped exterior, as may be desired, and standard in size to [it thewrench used in screwing the nut to position. 'This ,base B has aconical-shaped projection a, which is divided into three equal parts bythree slots F F F, each slot extending through one wall of the cone 0 ina direction at right angles to the bore 0]. the member and downwardthrough the cone 0 and into the base B to a depth equal to abouttwo-thirds the entire height oi said member. The bottom of the base l;is slightly concave in shape, as indicated by the dotted line 1), whichis exaggerated in order to plainly show the idea. It is the peculiarcol'istruetion 01 this member which makes this lock-nut oi great value.The member 1*] is the top oli the nut and, like the base, has anexterior of standard shape and size. This member has a bore the samesize as the bore in the base, both members being tapped to lit the bolton which they are to be used. This top member E has in one end aconical-shaped socket l-l, proportioned to the size and shape of nutdesired, and each nut to lit over the eorrespomling conical projectionin member 13.

To use the nut, place the member l on the bolt with the concave bottomfacing the parts which are to be held. Then put on the top E, with theconical socket facing the conical projection of the member B, and screwit up until the two parts meet. Then place the wrench on the nut,covering both members and screw up ust as you would a common nut untllthe work is drawn tightly together,

and then slipping the wrench off the member B onto the member E turnthis member up until the nut is firmly locked. To remove the nut, placethe wrench on the member E, give it a turn ofi, and then, slipping thewrench over both members, remove as you would a common nut.

The base B is of peculiar construction and works as follows: In screwingthe member B against a piece of work the concave bottom acts as a leverand throws the three parts of the conical extension C (which are made bythe three slots F F F) in against the threads of the bolt and gives us agood look. Now

when the member E is screwed up against the member B, the conical socketH fitting over the conical extension 0, the three parts of the cone 0are held firmly in place, and the nut is locked still more firmly by thethrust of the socket H against the cone 0 and the similar action betweenthe threads of the bore of the top member E and the threads of the bolt,

and there we have a double lock-nut of great CHAS. IV. GIBBS.

lVitnesses:

JOHN W. BARNns, \VnsLnY H. BARNES.

